Direct observation of Au(111) electrode surface structure in bis(trifluoromethylsulfonyl)amide-based ionic liquids using surface X-ray scattering

作者：Tamura Kazuhisa^*; Miyaguchi Shin ichiro; Sakaue Kiyoshi; Nishihata Yasuo; Mizuki Jun'ichiro

来源：Electrochemistry Communications, 2011, 13(5): 411-413.

DOI：10.1016/j.elecom.2011.02.006

• Ionic liquid
• Bis(trifluoromethylsulfonyl)amide
• Au(111) electrode
• Surface structure
• Surface X-ray scattering

The surface structure of Au(111) electrodes in hydrophobic ionic liquids, 1-butyl-1-methylpyrrolidinium bis (trifluoromethylsulfonyl)amide ([BMP]TFSA) and 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) amide ([BMIM]TFSA) was investigated using surface X-ray scattering. In both [BMP]TFSA and [BMIM]TFSA, the reconstruction of the surface structure was observed and the phase transition between the (1 x 1) and the reconstructed structure was found to be reversible. On the other hand, the area of the reconstructed structure in [BMP]TFSA was larger than that in [BMIM]TFSA. These differences suggest that the [BMIM](+)-Au interaction is stronger than the [BMP](+)-Au interaction.

• 出版日期2011-5